Detailed Product Description:

This is a white powder.  Insoluble in water.  Somewhat soluble in

mineral acids and strong alkaline solutions.

Grade/Purity:

This is Reagent Grade material with a minimum purity of 99.7%.

Particle size approximately 10 microns.

Background:

Aluminum oxide is an amphoteric oxide of aluminum.  It is also

commonly referred to as alumina, corundum, sapphire, ruby or aloxite. 

It is produced by the Bayer process from bauxite. Its most significant

use is in the production of aluminum metal, although it is also used as

an abrasive due to its hardness and as a refractory material due to its high

melting point.

Aluminum oxide is an electrical insulator but has a relatively high thermal

conductivity (40 Wm-1K-1) for a ceramic material.  In its most commonly

occurring crystalline form, called corundum or á-aluminum oxide, its hardness

makes it suitable for use as an abrasive and as a component in cutting tools.

Aluminum oxide is responsible for resistance of metallic aluminum to weathering.

Metallic aluminum is very reactive with atmospheric oxygen, and a thin passivation

layer of alumina (4 nm thickness) forms in about 100 picoseconds on any exposed

aluminum surface.  This layer protects the metal from further oxidation.  The

thickness and properties of this oxide layer can be enhanced using a process called

anodizing.

Applications:

Aluminum oxide possesses strong ionic interatomic bonding giving rise to it’s

desirable material characteristics.  It can exist in several crystalline phases which

all revert to the most stable hexagonal alpha phase at elevated temperatures.  This

is the phase of particular interest for structural applications.

Alpha phase alumina is the strongest and stiffest of the oxide ceramics.  High

hardness, excellent dielectric properties, and good thermal properties make it the

material of choice for a wide range of applications.

It resists attack by all gases except wet fluorine and is resistant to all common

reagents except hydrofluoric acid and phosphoric acid.  Elevated temperature

attack occurs in the presence of alkali metal vapors particularly at lower purity

levels.

Precautions:

Download, read, and understand the MSDS and the precautions listed

before using this substance.

Click here to download copy of MSDS (Material Safety Data Sheet)

Packaging:

Contents of 200 grams comes packed in 250 ml sized wide-mouth

HDPE Nalgene bottle.